NNAT Practice Pack — Grade 8

Answer Key — NNAT Grade 8

1. 1. D — Each row holds the same three figures, sliding one place every row — so every row and every column contains each figure exactly once. The empty corner's row and column are both missing the same figure: D. The others: A repeats the figure beside the empty cell; B a figure that breaks the cycle; C the right figure with the wrong fill; E the right figure at the wrong size.
2. 2. D — Lay one design over the other: every mark from both appears once. That gives D. The others: A keeps only the first design; B the merged design slid one place; C invents a mark neither design has; E keeps only the second design.
3. 3. D — Follow the pattern's rows and columns into the hole: the missing piece must continue them without a jump. D lines up exactly. The others don't: A the pattern too tightly packed; B the right patch mirrored; C the right patch turned a quarter-turn; E the patch from the wrong place in the pattern.
4. 4. D — In the top row, the figure's fill darkens one step and a smaller copy appears inside. Applying the same change to the bottom figure gives D. The others each make a specific mistake: A applies a different rule than the top row shows; B the bottom figure with no rule applied; C applies the change twice; E right change, wrong figure shape.
5. 5. E — Each row holds the same three figures, sliding one place every row — so every row and every column contains each figure exactly once. The empty corner's row and column are both missing the same figure: E. The others: A a figure that breaks the cycle; B repeats the figure above the empty cell; C the right figure with the wrong fill; D a figure that breaks the cycle.
6. 6. C — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives C. The others: A loses one mark in the merge; B invents a mark neither design has; D keeps only the first design; E keeps only the marks the designs share.
7. 7. A — Follow the pattern's rows and columns into the hole: the missing piece must continue them without a jump. A lines up exactly. The others don't: B the right patch mirrored; C the pattern at the wrong size; D the pattern too tightly packed; E the patch from the wrong place in the pattern.
8. 8. B — In the top row, a smaller copy appears inside and the figure's fill darkens one step. Applying the same change to the bottom figure gives B. The others each make a specific mistake: A right change, wrong figure shape; C applies a different rule than the top row shows; D the bottom figure with no rule applied; E copies the top row's result instead of transforming the bottom figure.
9. 9. C — Each row holds the same three figures, sliding two places every row — so every row and every column contains each figure exactly once. The empty corner's row and column are both missing the same figure: C. The others: A repeats the figure above the empty cell; B the right figure at the wrong size; D a figure that breaks the cycle; E repeats the figure beside the empty cell.
10. 10. C — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives C. The others: A keeps only the second design; B keeps only the first design; D invents a mark neither design has; E loses one mark in the merge.
11. 11. D — Follow the pattern's rows and columns into the hole: the missing piece must continue them without a jump. D lines up exactly. The others don't: A shifted sideways off the pattern's rhythm; B the pattern too tightly packed; C the right patch turned a quarter-turn; E the patch from the wrong place in the pattern.
12. 12. E — In the top row, the figure's fill darkens one step and the figure shrinks. Applying the same change to the bottom figure gives E. The others each make a specific mistake: A applies a different rule than the top row shows; B copies the top row's result instead of transforming the bottom figure; C applies only one of the two changes; D applies the change twice.
13. 13. E — Each row holds the same three figures, sliding two places every row — so every row and every column contains each figure exactly once. The empty corner's row and column are both missing the same figure: E. The others: A repeats the figure beside the empty cell; B the right figure with the wrong fill; C repeats the figure above the empty cell; D the right figure at the wrong size.
14. 14. B — Lay one design over the other: every mark from both appears once. That gives B. The others: A keeps only the second design; C loses one mark in the merge; D keeps only the first design; E the merged design slid one place.
15. 15. A — Follow the pattern's rows and columns into the hole: the missing piece must continue them without a jump. A lines up exactly. The others don't: B the right patch turned a quarter-turn; C the patch from the wrong place in the pattern; D the right patch mirrored; E shifted sideways off the pattern's rhythm.
16. 16. A — In the top row, the figure grows and a smaller copy appears inside. Applying the same change to the bottom figure gives A. The others each make a specific mistake: B copies the top row's result instead of transforming the bottom figure; C applies only one of the two changes; D applies a different rule than the top row shows; E the bottom figure with no rule applied.
17. 17. C — Each row holds the same three figures, sliding one place every row — so every row and every column contains each figure exactly once. The empty corner's row and column are both missing the same figure: C. The others: A a figure that breaks the cycle; B repeats the figure above the empty cell; D a figure that breaks the cycle; E the right figure at the wrong size.
18. 18. A — Lay one design over the other: every mark from both appears once, and a mark both designs share appears once, not twice. That gives A. The others: B invents a mark neither design has; C the merged design slid one place; D loses one mark in the merge; E keeps only the marks the designs share.
19. 19. B — Follow the pattern's rows and columns into the hole: the missing piece must continue them without a jump. B lines up exactly. The others don't: A the right patch turned a quarter-turn; C shifted sideways off the pattern's rhythm; D the pattern at the wrong size; E the patch from the wrong place in the pattern.
20. 20. C — In the top row, the figure's fill darkens one step and the figure doubles. Applying the same change to the bottom figure gives C. The others each make a specific mistake: A the bottom figure with no rule applied; B applies a different rule than the top row shows; D applies only one of the two changes; E right change, wrong figure shape.